Home / 12,708.39-19,074.90-6,139.20

Finding the Fourth Proportional to 12,708.39, 19,074.90 and 6,139.20

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Solution

The fourth proportional to 12,708.39, 19,074.90 and 6,139.20 is: 9,214.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.39 : 19,074.90 = 6,139.20 : x
  2. Step 2: Convert to fraction form
    12,708.39/19,074.90 = 6,139.20/x
  3. Step 3: Cross multiply
    12,708.39x = 19,074.90 × 6,139.20
  4. Step 4: Simplify right side
    12,708.39x = 117,104,626.08
  5. Step 5: Solve for x
    x = 117,104,626.08/12,708.39
  6. Step 6: Final answer
    x = 9,214.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.